Some of the soil is so hard, and the earthworm has no bones, how does it get in, doesn t it hurt?

It has a smooth, muscular, fleshy part of its head called the anterior lobe, which resembles a small earth drill and has the ability to explore and dig into the soil. Earthworm.

Rely on the head to open the way in front, first stretch the head and shrink the tip, drill a small hole, and then swell the head and squeeze the soil, and under the expansion and contraction of the body muscles, separate the soil and push forward. If you encounter a particularly hard and hardened soil layer and cannot squeeze it hard, you will swallow the soil in front of you and continue to advance in the soil, and cultivate the compacted soil layer into soft soil. In order to make holes in the dry hard soil, the earthworm will secrete a kind of mucus, and many small holes on the back will discharge the liquid, so that the ** will be kept moist, reduce the friction with the outside world during action, and make it live in a drier environment.

Earthworms are invertebrates that live mainly in soil. They have an important role in decomposing organic matter and improving soil structure.

Although earthworms appear to have no bones, they have a "bristle" made up of multiple layers of cells that help them burrow in the soil. These bristles are on the surface of the earthworm and can feel tiny particles in the soil and changes in humidity.

When an earthworm burrows, its muscles contract and relax, pushing its body forward. At the same time, the cells on its surface secrete a mucus that helps it slide through the soil.

While the process of burrowing may cause some wear and tear on earthworms, they can repair them by secreting a substance called collagen.

Therefore, although earthworms do not have bones, they have a number of special structures and functions that are adapted to soil life, allowing them to move freely through hard soil.

Aren't earthworms in the soil?

Because earthworms are relatively low, they have no nerve center, and their bodies can survive even if they are broken.

In the past, earthworms, like bees, had a soft and small body, shining golden wings, and could fly freely into the blue sky and burrow into flowers.

One day, when the earthworm caught a cold, he lay down at home to rest, and the hard-working bees collected honey while helping it find food. After a few days, the earthworm's illness was cured, but it felt very comfortable to lie at home without working and eating, so it lay at home and coquettishly, the bees had no choice but to collect honey by themselves, and the earthworm was at home "purring, purring" and sleeping.

The kind-hearted bee persuaded it: "Brother earthworm, you should quietly swim out to work, if you don't go out and move your wings, your wings will be inflexible and unable to fly in the future." "You lie, how can you not fly with wings?

The bee shook its head and flew away. Since then, earthworms have been eating and sleeping all day long, and they no longer work.

Soon, the earthworm found that its wings were stiff and its body had gained weight, and the earthworm felt very uneasy, so it climbed off the bed, spread its wings and tried to fly, but its wings were no longer as soft and light as before, and it only fluttered a few times before it fell, and finally, the wings "clicked" and broke, leaving only a bulging, long and slippery body. Oh, how can you see people like this, the earthworm cried with regret. The "buzz" was eliminated, and the bees came back from collecting honey, and the earthworms were embarrassed to see the bees, so they had to burrow into the mud and dare not come out.

To this day, the earthworm still hides in the dirt, but after realizing its mistake, it has become much more industrious, and it is constantly loosening the soil.

Due to the large number of earthworm species, the living environment and favorite feed are also different, 62616964757a686964616fe4b893e5b19e31333332643930

Therefore, their living habits are also slightly different, but they like temperature, moisture, darkness, breathability, light, salt, earthquake, and spicy food are common, which are introduced here one by one for the reference of farmers.

1. Likes temperature and is afraid of cold and heat.

Earthworms like to live in warm environments, and they are afraid of both cold and heat. In 0 -5 dormant, 32 or more stop growing, die above 40, the appropriate temperature is 15 -30, the best temperature is 20-25, we want to obtain good breeding benefits, it is necessary to maintain the best temperature of 20-25 breeding environment all year round.

2. Likes moisture and is afraid of soaking.

Earthworms prefer to live in a humid environment and should not be too dry, but they should not be too wet to soak (except for water earthworms). The humidity of the substrate includes two aspects, one is the humidity of the base soil, the other is the humidity of the air humidity, the humidity of the general substrate is required to be 40%-60%, (it is good to hold the fingers of the base soil to see the water and not to flow down), and the relative humidity of the air is adjusted to 60%-80% as well.

3. Likes dark and is afraid of light.

Earthworms like to live in the dark, usually burrowing under the soil layer to feed, burrowing into the base material to feed, and some crawl out of the ground to feed at night. Because he is afraid of light, he has developed the habit of lying day and night. Although earthworms have no eyes and cannot see light, their whole body is full of photoreceptor organs, and strong light is extremely unfavorable to the growth and reproduction of earthworms, so earthworms are always active in the dark, and the breeding environment should be selected in a dark place.

4. Likes sweet and is afraid of spicy.

Earthworms like to eat sour, sweet and fishy ingredients, such as rotten tomatoes, watermelon rinds, rotten fruits, fish washing water, etc. The most afraid of eating spicy food, such as green onions, garlic, chili peppers, etc., should be fed with the city's domestic garbage earthworms should pick out the spicy food and then feed.

5. Quiet and shock-resistant.

Earthworms prefer to live in a quiet environment and are most afraid of vibrations. Farms should be located in quiet places. Do not shake or frequently turn the base soil up and down. Frequent vibration will adversely affect the growth and reproduction of earthworms.

6. Acid-loving and salt-inducing.

Earthworms prefer to live in acidic or neutral soils, or in environments with water sources, and are most afraid of approaching saline, alkaline soils, or saline water sources. If you encounter saline soil or water sources, adjust the pH. The alkali should be adjusted with ammonium dihydrogen phosphate, and it can also be adjusted with 2% carcoal water, otherwise the earthworm can not survive.

Earthworms are used to restore.

Wet all over your body, top up the mud.

Soil drill line. In between, because of its own wetness, it will not hurt the body.

The body wall of earthworms is composed of angular plasma membrane, epithelium, annular muscle layer, longitudinal muscle layer and body cavity epithelium. The outermost layer is a single layer of columnar epithelial cells, the body of the earthworm, like a round slender tube, both ends are pointed, the front end of its body is called the preoral lobe, where the flesh is very thick, and the elastic force is also strong; In earthworms, the longitudinal muscle layer of some somites contracts and the annular muscle layer relaxes, and the body segments become thicker and shorter, and the bristles that grow obliquely backward on the body wall stretch out and insert into the surrounding soil. At this time, the annular muscle layer of the previous somite contractes, the longitudinal muscle layer relaxes, and the body segment becomes thinner and longer, and the bristles retract and disengage from the surrounding soil, so that the bristles of the latter segment are supported, that is, the body is pushed forward. Starting from the intersegmental sulcus, there is a dorsal hole at the dorsal line, which can discharge the body cavity fluid and moisten the body surface, which is conducive to the respiration of earthworms and the passage in the soil.

Maybe it's because it has a pointed head and is more powerful enough to loosen the soil?

Here's why:

The muscles of earthworms belong to striated muscles, which generally account for about 40 of the body volume, and are muscular and flexible. In earthworms, the longitudinal muscle layer of some somites shrinks and the annular muscle layer relaxes, so the somites become thicker and shorter, and the bristles that are born on the body wall and stretch out obliquely and protrude into the surrounding soil. At this time, the annular muscle layer of the previous somite contractes, the longitudinal muscle layer relaxes, the body segment becomes thinner and longer, the bristles retract, and the surrounding soil is freed from contact, so that the body is pushed forward by the support of the bristles of the latter segment.

Who said that you have bones to get into the earth.

Earthworm is a general term for oligochaetes in the phylum Annelids. In the scientific classification, they belong to the order Unidirectional Vermichi. symmetrical on both sides of the body, with segmentation; There are no bones and the body surface is covered with a thin cuticle with pigment.

With the exception of the first two segments of the body, the rest of the segments have bristles. Hermaphroditic, allogeneic fertilization, the production of egg cocoons through the ring belt during reproduction, and the reproduction of the next generation. There are more than 200 species of earthworms, which were called the most valuable animals on earth by biologist Charles Darwin in 1837.

Earthworms are called Dilong (Kaibian Dilong, Guangdilong) in traditional Chinese medicine, and the "Compendium of Materia Medica" says that it has the functions of activating meridians, activating blood and removing blood stasis, and preventing cardiovascular and cerebrovascular diseases. Earthworms feed on animal and plant detritus in the soil, and often burrow in the ground to loosen the soil, so that water and fertilizer can easily enter and improve the fertility of the soil, which is conducive to the growth of plants. Earthworms can be used as feed for poultry and are the preferred "meat" food of chickens and ducks; Earthworms are also widely adapted to freshwater fishing, and are suitable bait for various waters, fish, and climate.

But earthworms also have a harmful side. There is a parasite that lives in pigs, the pig lungworm, which is parasitic in the earthworm for a period of time during its larval growth and development. Therefore, in areas where the swine lungworm is endemic, earthworms provide convenient conditions for the reproduction of this parasite.

Live earthworms are susceptible to disease transmission and can transmit taeniasis and asthma to pigs. Tracheal intersecting nematode, annular capillary nematode, heterogeneiasis, and cuneiform taeniasis can be transmitted to poultry.

Earthworm is a very common terrestrial annelid, living in the countryside should be no stranger to it, generally in the more fertile land, with a shovel to turn one, soil, you can find a lot of earthworms, what is puzzling is that how the soft earthworm penetrates such a hard land? Let's take a look at it today.

Earthworms usually live in the soil, are diurnal and nocturnal, and feed on livestock manure, organic waste, and decaying plant stems and leaves. Although the earthworm is ugly and even frightened by its appearance, it is a true beneficial insect because it improves the soil and is conducive to the growth of crops. The ancients believed that "the worm has no claws and teeth, the muscles and bones are strong, eat the soil, drink the yellow spring, and use the heart"!

Meaning, the reason why earthworms are able to penetrate very hard soil is because they concentrate on digging the soil, which is certainly unscientific. The earthworm's ability to dig into the soil is also related to its body structure. The body of the earthworm is composed of corneum, epithelium, annular muscle layer, longitudinal muscle layer and body cavity epithelium, etc., and the body shape is like a snake, but the two ends of the body are pointed, and the front end of the body is called the anterior lobe, which has thick flesh and strong elastic force!

There are bristles on the body wall of the earthworm, which can penetrate deep into the soil, the body surface of the earthworm is usually relatively wet, when he relies on the bristles to grasp the ground and stretch forward, the body will secrete mucus, lubricate the body, reduce the resistance of the soil, so that you can walk freely in the soil, now you understand why the earthworm will dig the soil, I have to say that the animals of nature are really amazing, many things are unexpected.